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SIEMENS JXD63H400 Circuit Breaker

Product Overview

SIEMENS JXD63H400 is a SENTRON JXD Series Molded Case Circuit Breaker (MCCB) designed for low-voltage power distribution and motor protection applications. It provides reliable protection against short circuits and overcurrent faults in industrial electrical systems.

The breaker uses a JD frame design with magnetic trip protection and is suitable for high-current industrial applications.

Specifications

• Brand: SIEMENS
• Model: JXD63H400
• Product Type: Molded Case Circuit Breaker (MCCB)
• Series: SENTRON JXD
• Frame Size: JD Frame
• Rated Current: 400 A
• Rated Voltage: 600 VAC / 250 VDC
• Number of Poles: 3 Pole
• Phase: 3 Phase
• Trip Type: Magnetic Trip / High Instantaneous Trip
• Protection Function: Short-Circuit Protection
• Interrupting Rating:
  • 65 kA @ 240 VAC
  • 35 kA @ 480 VAC
  • 25 kA @ 600 VAC
• Instantaneous Trip Range: 2000–4000 A
• Mounting Type: Bolt-On
• Connection: Lug connection (lugs not included)
• Frequency: 50/60 Hz
• Standards: UL 489 / IEC related industrial applications

Advantages & Features

• High-current industrial circuit protection
• Reliable short-circuit interruption capability
• Compact molded case construction
• High instantaneous magnetic trip performance
• Suitable for motor circuit protection applications
• Durable design for industrial environments
• Easy integration into power distribution systems
• Supports Siemens SENTRON protection solutions

Applications

• Industrial power distribution panels
• Motor control centers (MCC)
• Factory automation equipment
• Large motor protection systems
• Manufacturing facilities
• Industrial machinery
• Electrical control cabinets
• Power distribution systems

Precautions

• Verify rated voltage and current before installation
• Confirm compatibility with the electrical system
• Ensure correct terminal connection and tightening torque
• Disconnect power before maintenance
• Do not exceed rated interrupting capacity
• Installation should follow local electrical safety regulations 

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